Datasheet

Register and Memory Mapping
Intel
®
Atom™ Processor E6xx Series Datasheet
58
5.4 Register Access Method
The registers and the connected devices can be accessed by the host through either a
direct register access method or an indirect register access method.
5.4.1 Direct Register Access
5.4.1.1 Hard Coded IO Access
The Intel
®
Atom™ Processor E6xx Series decodes the 16-bit address for a PORT IN
and/or PORT OUT from the CPU and directly accesses the register. These addresses are
unmovable.
Bus 0: Device 25: Function 0 PCI Express* Port 2
Bus 0: Device 26: Function 0 PCI Express* Port 3
Bus 0: Device 27: Function 0 Intel
®
High Definition Audio
β
Controller
Bus 0: Device 31: Function 0 LPC Interface
Figure 4. PCI Devices
Table 39. PCI Devices and Functions (Sheet 2 of 2)
Bus: Device: Function # Functional Description
Intel® Atom™ Processor
E6xx Series
IOH
PCI-E2
PCI-E3